Single layer graphene oxide has been utilized as a scaffold material to which a redox active fullerene derivative 1  and aphoto-sensitizer Zn metallated phthalocyanine derivative 2  have been covalently functionalized. The rate of functionalization has been seen to depend upon factors such as the size of the molecule, competitive affinity of the molecules towards binding to the functional groups, availability of the functional groups and reaction time. The functionalized graphene derivative was characterized using various techniques such as UV-Vis, fluorescence, TEM, Raman, TGA and electrochemistry. The scaffold system has been efficiently utilized by the donor acceptor entities for an efficient electron transfer process that has been proven by fluorescence life time estimation. Nanosecond transient absorption studies has established the existence of charged separated species with fast decay and that electron transfer indeed takes place via triplet excited state of the donor moiety. This was supported firmly by electron mediation experiments. This in turn leads to numerous scopes for SLGO to be used as scaffold that could thus be used in building various donor-acceptor systems for light energy harvesting.

Decorating single layer graphene oxide with donor-acceptor molecules in an electron transfer process

245th National Meeting (2013)

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